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RhoE enhances multidrug resistance of gastric cancer cells by suppressing Bax.

Abstract：

:We have previously reported that RhoE is overexpressed in the SGC7901/VCR cell line. However, the potential role of RhoE in the development of multidrug resistance of gastric cancer is unknown. In the present study, RhoE enhanced the resistance of SGC7901 cells to several kinds of antitumor drugs. RhoE overexpression did not alter the intracellular adriamycin accumulation of SGC7901 cells nor the expression of P-gp and MRP-1, but protected SGC7901 cells from vincristine-induced apoptosis. RhoE was found to downregulate the expression of Bax at a posttranscriptional level. Western blot revealed no effects of RhoE on the activities of the Caspase family of proteins. In brief, our study demonstrated that RhoE may promote the multidrug resistance phenotype of gastric cancer cells by decreasing the expression of Bax at posttranscriptional level, thus inhibiting vincristine-induced apoptosis.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Li K,Lu Y,Liang J,Luo G,Ren G,Wang X,Fan D

doi

10.1016/j.bbrc.2008.12.044

subject

Has Abstract

pub_date

2009-02-06 00:00:00

pages

212-6

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(08)02411-X

journal_volume

379

pub_type

杂志文章

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